Which statement about the number of protons and neutrons in a nuclear change is correct?

AThe total atomic mass before and after the change remains the same, but the total charge is different.

BThe relative numbers of protons and neutrons are the same before and after the change.

CThe total charge before and after the change remains the same, but the total atomic mass is different.

DThe relative numbers of protons and neutrons can differ before and after the change, but the total number of those particles remains the same.